Mug



FIG. 1 is a front perspective view of a mug showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a rear view thereof. 

The ornamental design for a mug, as shown and described. 